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Paper 2
Topic 6: Inheritance, Variation and Evolution
Cloning Plants (T)
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Cards (9)
What are the two methods of cloning plants mentioned in the video?
Cuttings
and
tissue culture
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What is the significance of asexual reproduction in cloning plants?
It produces
genetically
identical organisms called
clones
.
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Why are clones advantageous compared to offspring produced by sexual reproduction?
Clones have
predictable characteristics
, unlike
varied
offspring from
sexual reproduction.
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What is the process of taking cuttings to clone a plant?
Remove a small piece of the plant
Dip the end in
rooting powder
Rooting powder contains plant hormones that encourage
root development
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How does tissue culture differ from taking cuttings for cloning plants?
Tissue culture divides a plant into many
pieces
, while cuttings involve a single
piece.
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What role do plant hormones play in tissue culture?
Stimulate growth
Encourage development into
fully grown clones
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Why must the conditions for tissue culture be sterile?
To prevent the introduction of harmful
microorganisms
.
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What are the benefits of tissue culture in commercial plant nurseries?
Produces thousands of
genetically
identical plants quickly
Cost-effective method for growers
Ensures
desired
characteristics in plants
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How is tissue culture used to preserve rare species of plants?
It
allows
for the cloning of rare species to ensure their
preservation.
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